제출 #568844

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
568844		KBTIT	Strange Device (APIO19_strange_device)	C++14	100 / 100	1916 ms	85880 KiB

strange_device

#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef long double ld;
#define FOR(i,l,r) for(ll i=l;i<r;i++)
#define REP(i,n) FOR(i,0,n)
#define RFOR(i,l,r) for(ll i=r-1;i>=l;i--)
#define RREP(i,n) RFOR(i,0,n)
#define ALL(x) x.begin(),x.end()
#define PA pair<ll,ll>
#define F first
#define S second
#define BS(A,x) binary_search(ALL(A),x)
#define LB(A,x) (ll)(lower_bound(ALL(A),x)-A.begin())
#define UB(A,x) (ll)(upper_bound(ALL(A),x)-A.begin())
#define COU(A,x) (UB(A,x)-LB(A,x))
#define sz(c) ((ll)(c).size())
template<typename T>using min_priority_queue=priority_queue<T,vector<T>,greater<T>>;
template<class T>bool chmax(T&a,T b){if(a<b){a=b;return 1;}return 0;}
template<class T>bool chmin(T&a,T b){if(b<a){a=b;return 1;}return 0;}
template<class T>void print(vector<T>A){REP(i,A.size()){if(i)cout<<" ";cout<<A[i];}cout<<endl;}
ld dist(ld x1,ld y1,ld x2,ld y2){return sqrtl((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));}
//const ll mod=1000000007;
//const ll mod=998244353;
int main(){
  ll N,A,B;cin>>N>>A>>B;
  vector<PA>S;
  A/=__gcd(A,B+1);
  ll X=2e18;
  if(B<=2e18/A)X=A*B;
  REP(i,N){
      ll L,R;cin>>L>>R;
      if(R-L>=X){cout<<X<<endl;return 0;}
      L%=X;R%=X;
      if(L>R){
          S.emplace_back(PA(L,X));
          S.emplace_back(PA(0,R+1));
      }
      else S.emplace_back(PA(L,R+1));
  }
  set<ll>Q;
  for(auto[l,r]:S)Q.insert(l),Q.insert(r);
  vector<ll>R;
  for(auto q:Q)R.emplace_back(q);
  ll M=sz(R);
  vector<ll>D(M);
  for(auto[l,r]:S)D[LB(R,l)]++,D[LB(R,r)]--;
  REP(i,M)D[i+1]+=D[i];
  ll ans=0;
  REP(i,M-1)if(D[i])ans+=R[i+1]-R[i];
  cout<<ans<<endl;
  return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

strange_device.cpp: In function 'int main()':
strange_device.cpp:42:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   42 |   for(auto[l,r]:S)Q.insert(l),Q.insert(r);
      |           ^
strange_device.cpp:47:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   47 |   for(auto[l,r]:S)D[LB(R,l)]++,D[LB(R,r)]--;
      |           ^

• Subtask 1: 10 / 10
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 20 / 20
• Subtask 7: 20 / 20
• Subtask 8: 30 / 30